html,
body,
#app {
    width: 100%;
    height: 100%;
    font-family: Helvetica Neue, Helvetica, PingFang SC, Hiragino Sans GB, Microsoft YaHei, SimSun, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    font-size: 14px;
}

* {
    border: none;
    outline: none;
    box-sizing: border-box;
}

ul,
li {
    list-style: none;
    margin: 0;
    padding: 0;
}

.el-dropdown-menu {
    max-height: 180px;
    overflow-y: auto;
}

.ql-editor {
    min-height: 300px;
}